ЦНА
High Pressure Emergency Core Cooling System (ECCS) Pumps
Horizontal centreline mounted, multistage, barrel-casing centrifugal, with a withdrawable cartridge of ring-section type, plain bearings and shaft sealing by means of mechanical seals.
Additional and technical information
| Pump make | Equipment applications | Technical data | Safety class / Seismic stability category / Climatic version | ||
| Capacity, m3/h | Head, m | Type of drive & its parameters | |||
| ЦНА 150-60 | Used as a charging pump for injection of boric acid solution into the reactor coolant system (primary circuit) during a failure at the NPS units equipped with VVER-91 pressurized water reactor | 150 | 650 | Electric motor n = 2973 rpm P nom. = 630 kW U = 6000 V | 2З/I/М4 |
| ЦН 150-60-1 | Designed for injection of boric acid solution into the reactor coolant system:
– to replenish liquid losses in the primary circuit (as a volume control pump) and to remove the fission product decay heat from the reactor core following a loss-of-coolant accident (as a result of rupture of small pipes of up to 100 mm inclusive in diameter) as a charging pump; – to make up the reactor coolant circuit in the emergency situation associated with a loss-of-coolant accident (leakage through rupture of pipes of more than 100 mm in diameter) as a safety injection pump; – to maintain the reactor core in the subcritical condition (as a RHR pump) |
153 | 708 | Electric motor n = 2973 rpm P nom. = 630 kW U = 6000 V | 2/I/ТВ4 |
| ЦНА 150-60-2 | Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated | 150 | 650 | Electric motor n = 2979 rpm P nom. = 630 kW U = 10000 V | 2/I/УХЛ4 |
| ЦНА 150-60-3 | Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated | 150 | 650 | Electric motor n = 3000 rpm P nom. = 630 kW U = 10000 V | 2/I/УХЛ4 |
| ЦНА 150-60-4 | Designed for injection of boric acid solution into the primary circuit during predictable emergency operations, at which the safety injection system is to be automatically actuated | 150 | 650 | Electric motor n = 3000 rpm P nom. = 630 kW U = 6000 V | 2/I/М4 |
| ЦНА 150-110-2 | Designed for injection of boric acid solution from the emergency storage tank into the primary circuit of the NPS power units equipped with VVER-1000 PWR during cooldown of the reactor coolant system following a failure | 150 | 980 | Electric motor n = 3000 rpm P nom. = 800 kW U = 6000 V | 2/I/УХЛ4 |
